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Finding the Fourth Proportional to 13,614.70, 18,788.18 and 7,646.25

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Solution

The fourth proportional to 13,614.70, 18,788.18 and 7,646.25 is: 10,551.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.70 : 18,788.18 = 7,646.25 : x
  2. Step 2: Convert to fraction form
    13,614.70/18,788.18 = 7,646.25/x
  3. Step 3: Cross multiply
    13,614.70x = 18,788.18 × 7,646.25
  4. Step 4: Simplify right side
    13,614.70x = 143,659,121.33
  5. Step 5: Solve for x
    x = 143,659,121.33/13,614.70
  6. Step 6: Final answer
    x = 10,551.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.